Door-checking device



1. 0. NASLI N. DOOR CHECKING DEVICE. APPLICATION FILED JAN-21, 1920.

Patented Nov. 23,1920.

[me/rotor UNITED STATES TNT or'FIcE,

JOHN 0. NASLIN', 0F SEATTLE, WASHINGTON.

DOOR-CHECKING DEVICE. I

Specification of Letters Patent. Patented NOV. 23, 1920- Application filed. January 21, 1920. Serial No. 352,976.

To all whom it may concern.

Be it known that I, JOHN O. NAsLrN, a citizen of the United States, residing at 415 Taylor avenue, Seattle, in the county of King and State of Washington, have in vented a new and useful Door-Checking Device; and I do hereby declare that the following is a full and exact description thereof, reference'being had to the accompanying 1 drawings and to the characters and references marked thereon.

My invention relates to the class of door checks for which an application for Letters Patent was filed by me September 22, 1919, Serial Number 325,37 8, designed for the use 7 to check a door to prevent slamming, operative bythe door so as to check its velocity when swift, and to permit its free closure when its movement is slow.

It contains the novel parts with which e2;-

periments were made at the time exper1- ments were being made in the one described in said application, which were at the time considered impracticable and not worth patenting, but later experiments have, however, proven the contrary, in that, while this present device contains fewer and simpler parts, that consequently costs less to manufacture, it will, nevertheless, serve the same purpose fully as well, as the other one referred to. All of which I shall now proceed to describe, and more fully set out in the claims,

as illustrated in the accompanying draw vings, wherein r Figures 1 and 5 are front views of the device with the front part of the casing removed, and the normal perpendicular position of the bumper andthe arms are indicated by solid lines, and the inclined position of the bumper and the arms, as assumed when the striker is quickly struck, and the vertical position of the bumper in the casing, as assumed when the striker is slowly struck, are indicated by dotted lines.

I have provided for the mechanism of the device a casing 1, comprising two-parts of about the-same shape and size, with slits and openings therein for the striker and bumper members, for right and left hand purposes, and so shaped and constructed as to combine into one compartment, each side or part having both sides and ends bent together to meet on a straight line drawn side-wise and end-wisethrough the casing,- as Indicated at 1 ,'and the ends being fur-f thermore bent inwardly into the casing forming flanges flush with the other bent parts with perforations for: screws, as at 13 and 14, which will securely maintain both parts of the casing in an even and proper position, whenxby suitable screws inserted throu h said perforations the deviceis fastened onto the door jamb; and when un loosened, by this mode of construction, the

mechanism of the device can very readily be removed and again inserted, as may be necessary for right and'left hand, uses, for a self-closing door. 2 V v Openings for this purpose have been provided in the two opposite parts at 7*, 8 and 8 through which the striker and the bumper swing and operate; and an opening is also provided in the side facing the door, at 11, so as to allow the jointed ends of arm 3 and link 3 required swinging space inthat direction.

As previously intimated, by the means of suitable screws inserted through the perforations 13 and 14 the casing is fastened onto the door jamb A, as closely to the edge of, the door B, as will properly clear its edge when openlngand clos1ng;. and arm 3 is mounted. in the casing llupon pivot 2, as

near-to the side thereof facing the door as' will permit of the proper operation of the device, and suitably position a portion of the self-closing v the bumper 7 in the path of door.

pivoted arm 4, at 6 in Fig.1, and by means of a lever link 3 connected to'saidarm 3 at 6 and to said arm 4 at 6*, and to the free end of this arm 4 isattached and suspended said bumper 7, which should be of someiresilientmaterial, such as rubber, orthe like, which produces a recoil when struck, and by its own gravity and by said suspension means is adapted to be carried out of the reach of the door when the latters move- To the swinging end of'said arm 3 isment is slow and to remain in its path when its movement is swift, as hereinafter more fully will be described. 7

Suitable plates 5 and 7 are provided upon the edge of the door, to give it wearing protection where it engages with bumper 7 and what will be termed striker 5, as it is struck by the door,.and which is rigidly fixed to said arm 3, either a short space below pivot 2-, and projects through the front of the casing, as shown in Fig. 1, or is fixed to said arm 3 above said pivot 2, and is positioned above the top of the casing, as shown in Fig. 5, and is provided with a bumper guard 9, as shown in F 4 and 8. Both said guard and striker are so shaped and positioned as to be easily pressed to the side by v the swinging door, so as i to properly swing the bumper arm 4 with the bumper 7 far enough from'the edge of the door to be out of its reach. when it moves to and from its closed position.

Bumper guard 9 is adapted to maintain the bumperpositioned in the casing after the door passes striker 5 to a closed position. so that it may not swing back into the path of the door and obstruct its opening swing.

The mechanical combination of the device, as illustrated in Figs. 1 and 5, though somewhat modified in form of construction,

where, as shown in Fig, 1, only the two pivoted arms 3 and 4 are employed and the striker 5 is positioned on arm 3 below pivot 2, while, as shown in Fig. 5, striker 5 is positioned on the upper end of arm 3 above the casing above pivot 2, and for that reason necessitates, besides the use of arms 3 and 4, the use of an intermediate lever link 3, connecting both said arms 3 and 4 at 6 and 6*", and is provided with a lever fulcrum 10 whereby to accomplish the same result as with the two arms 3 and 4, namely to swing bumper 7 out of the path of the door, which is therefore evidently clear that both modes of construction involvesthe same principle.

With regard to the operation of the device, it may be stated further, that though the passing contact by the door with the striker 5, will more aptly swing the jointed end of arm 4 farther away from the door when the latters movement is swift than when slow, the resulting effect occasioned thereby upon the bumper 7 is oppositely different when the movement of the door is swift than when it is slow. For in the former instance, when the door hits the striker 5. quickly, while, as stated, the

- jointed end of arm 4 is quickly swungout away from. the door, the bumper being of heavier weight than said arm and suspended in a free perpendicular position, will notrespondto the quick movement of the said jointed end of arm 4,and instantly'swing in its direction, but rather by the effect of its quick movement, will momentarily swing in the opposite and an upward direction; while the door meantime swings onward on its closing course and strikes the bumper in the inclined position, shown by dotted lines in Figs. 1 and 5, with one or more resulting recoils, until it is finally slowed down enough in its closing movement to but gently press the striker out of its way, and thereby swing the bumperout-of its closing course before it has time to strike it, and thus will slowly go closed without any obj ectionable slamming. v

Evidently some of the details of'the con; struction of the device might be otherwise modified in shape and form without. however, changing the principles involved.

I do not therefore wish to be understood as to limiting the scope of my invention to the exact design herein shown. The mechanical combinations herein are showing only the embodiment of my'invention which I now believe to be the best to use.

What I claim is: y

1. In a door check, a suspended strikerarm jointed to a bumper -'arm having a bumper fixed to its swinging end and swingingly suspending saidbumper in the path of V a closing door, a striker fixed to said strikerarm engageable by the door toincline said bumper in the path of the door, and to swing said bumper out ofthe path of the door'only when the latters movement is slow; and a bumper guard operative by the door to retain said bumper out. of the swing of the'door,

when bysald door said guard is encountered.

lightly struck by the door; and a bumper guard operative by the door for retaining said bumper out of the swing of'the door between said striker and the door j amb.

3. In a door check, a bumper fixed to the free end of a bumper-arm jointed to a swingingly suspended striker-arm, whereby said bumper is swingingly positioned in the path of a closing door, a striker-fixed to said striker-arm engageable by thedoor, to swing said bumper out of the path of the door, and to incline said bumper in the path of the door only when thereby the said striker is quickly struck; and aibumper guardoperative by the door to retain said bumper out of the'swing of the door, when the latter passes said striker to a closed position.

4. A reversible casing, containing a pivot ed striker arm operative through openings therein, and a bumper arm jointed to said striker'arm vertically suspending abumper in the path of a swinging door, to be by bumper fixed to supports pivoted in said casing vertically suspending said bumper in the path of a self-closing door, and means fixed to said supports actuated by said door whereby said bumper is inclined in the path of said door to check by recoil its movement, and whereby it is vertically positioned in said casing outside of the swing of said door, and a bumper guard on said means for retaining said bumper in said casing when the said door passes said means to a closed position.

6. A door checking bumper fixed to swinging supports pivoted in a casing vertically suspending said bumper in the path of a closing door, and means fixed to said supports actuated by said door to incline said bumper in the path of said door to check by recoil its closing movement only-when said means is quickly struck byfsaid door, a retaining guard on said means to position said bumper in said casing when said door passes said means to a'closed position, and plates on the edge of said door to engage said bumper and said means. 7

7 A door checking member attached to a jointed support pivoted in a casing vertically suspending said member in the path of a swinging door, and means operative through openings in said casing actuated by said door to incline said member in the path of said door to check by recoil its closing movement, and to swing said member into the said casing when the said means is gently struck by said door, a guard on said means to retain said member outside of the path of said door when it passes said means to a closed position, and protecting means on the edge of said door to engage said means and said member.

8. In a door check, a bumper fixed to jointed supports pivoted in a reversible casing vertically suspending said-bumper in the path of a closing door, said casing, and a striker fixed to said supports actuated by said door through openings in said'casing, to incline said bumper in the path of said door to check by recoil its closing course, when said striker is quickly struck by said door, and to vertically position said bumper in said casing outside of thepath of said door when by said door the said striker is lightly struckyplates fixed on the edge of said door to engage said bumper and striker, and a guard on saidstriker-arm for retaining said bumper outside of the swing of said door when it passes said strikerto a closed position.

. 9. In a door check, a reversible two-part casing containing one compartment, a door checking member fixed to jointed link-sup- T ports pivoted in said casing and vertically suspending said member in the path of a closing door, a striker arm mounted on said supports engageable by the door to incline said member in the path of said door to check by recoil its closing movement, and

to position said member in said casing outside of the path of said door only whenby said door the said striker is lightly struck,

a guard on said striker-arm for retaining the said member outside of thepath of said door when it passes said striker to a closed position, and plates fixed to the edge of'said door to engage said striker and said member. 7 7 JOHN O. NA SLIN. I 

